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# brew-bundle.rb
def usage
puts <<-EOS.undent
Usage: brew bundle [path]
Looks for a Brewfile and runs each line as a brew command.
brew bundle # Looks for "./Brewfile"
brew bundle path/to/dir # Looks for "path/to/dir/Brewfile"
brew bundle path/to/file # Looks for "path/to/file"
For example, given a Brewfile with the following content:
install formula
Running `brew bundle` will run the command `brew install formula`.
NOTE: Not all brew commands will work consistently in a Brewfile.
Some commands will raise errors which will stop execution of the Brewfile.
Example that outputs an error:
tap my/tap # fails when my/tap has already been tapped
In this case use the full formula path in the Brewfile instead:
install my/tap/formula # succeeds even when my/tap has already been tapped
EOS
exit
end
usage if ARGV.include?('--help') || ARGV.include?('-h')
path = 'Brewfile'
error = ' in current directory'
if ARGV.first
if File.directory? ARGV.first
path = "#{ARGV.first}/#{path}"
error = " in '#{ARGV.first}'"
else
path = ARGV.first
error = " at '#{ARGV.first}'"
end
end
raise "Cannot find Brewfile#{error}" unless File.exist? path
File.readlines(path).each_with_index do |line, index|
command = line.chomp
next if command.empty?
next if command.chars.first == '#'
brew_cmd = "brew #{command}"
odie "Command failed: L#{index+1}:#{brew_cmd}" unless system brew_cmd
end
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